Tychsen, Andrew Christian [Col CoS I-Corps]


Andrew C. Tychsen

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Andrew Christian Tychsen
Andrew C. Tychsen.png
Born (1893-06-27)June 27, 1893
Hoboken, New Jersey
Died July 3, 1986(1986-07-03) (aged 93)
Richland County, South Carolina
Allegiance United StatesUnited States of America
Service/branch United States Army seal United States Army
Years of service 1914-1953
Rank US-O7 insignia.svg Brigadier General
Commands held 100th Infantry Division (United States) 100th Infantry Division
Battles/wars World War I
World War II
Korean War
Awards Distinguished Service Medal
Legion of Merit (2)
Bronze Star Medal (2)

Andrew Christian Tychsen (June 27, 1893 July 3, 1986) was a United States Army officer with the rank of Brigadier General.

Early years

Tychsen was born on June 27, 1893 in Hoboken, New Jersey. During World War I, Tychsen enlisted as a Private in the Minnesota National Guard in April 1914 and was assigned to Company A of the 1st Infantry. In this capacity, Tychsen served on Mexican Border during Pancho Villa Expedition. He rose to the rank of First sergeant and was posted to the First Reserve Officers Training Camp at Fort Snelling on March 25, 1917.

Since August 1917, Tychsen was deployed in France with 88th Infantry Division and participated in the combats near Belfort and Epinal. Tychsen was promoted to the rank of Captain and Commanding Officer of Company C, 339th Machine Gun Battalion.

After his return to the States in 1919, Tychsen was commissioned as a Captain in the Regular army and attended the United States Army Infantry School at Fort Benning in 1921. During 19211925, he served as Assistant Professor of Military Science and Tactics at University of Minnesota.

Subsequently he served as Professor of Military Science and Tactics at St. Thomas Military Academy until 1932, when he was transferred to Hawaii, where he served at Schofield Barracks with 27th Infantry Regiment.

On August 1, 1935 Tychsen was promoted to the rank of Major and was detached to the Command and General Staff School at Fort Leavenworth in Kansas. He graduated there a year later and then was transferred to Jefferson Barracks in Missouri, where he served with 6th Infantry Regiment until 1938.

World War II

During the year 1938, Tychsen was transferred to the Camden, New Jersey, where he was appointed as an Executive officer of the Camden Military District. In this capacity, he was in command of Organized Reserves.

He spent some time as a Battalion commander of the 1st Infantry Replacement Group, before took command of 399th Infantry Regiment within 100th Infantry Division. He participated in the Battle of the Bulge, Rhineland Campaign and Central European Campaign.

At the beginning of January 1945, Tychsen was appointed assistant division commander of 100th Infantry Division. He succeeded Brigadier General John S. Winn in this capacity. He was promoted to the rank of Brigadier General on April 12, 1945.

On August 22, Tychsen succeeded Major general Withers A. Burress as Division commander and served with the Division until the end of January 1946, when the Division was inactivated.


During Korean War, Tychsen was appointed as Chief of Staff of the IX Corps under command of Major general Willard G. Wyman. Brigadier general Tychsen retired from the Army on June 30, 1953.

After retirement from the Army, Tychsen served on the United Nations Rehabilitation Commission for Korea and finally retired in 1958. Brigadier general Andrew Christian Tychsen died at the age of 93 on July 3, 1986. He is buried at Arlington National Cemetery.


Combat Infantry Badge.svg Combat Infantryman Badge
  Army Distinguished Service Medal
Bronze oak leaf cluster Legion of Merit with Oak Leaf Cluster
Bronze oak leaf cluster Bronze Star Medal with Oak Leaf Cluster
  Air Medal
  Mexican Border Service Medal
Bronze star World War I Victory Medal with one Battle Clasp
  American Defense Service Medal
  American Campaign Medal
Bronze starBronze starBronze star European-African-Middle Eastern Campaign Medal with 3 service stars
  World War II Victory Medal
  Army of Occupation Medal
  National Defense Service Medal
  Korean Service Medal
  United Nations Korea Medal



The corps commander was a very senior two star general, John B. Coulter, fifty-nine, who, like Walker, came to his post from command of the Fifth Army in Chicago. He had been chosen for this important job in Walker's army by MacArthur and Almond, without the usual and customary consultation with Walker. For that reason, and others, Walker received Coulter with less than overwhelming enthusiasm.[9-77]

Coulter's ties to MacArthur and Almond stretched back over many years. Like MacArthur, he was a graduate of the West Texas Military Academy (1911). In World War I he had served with MacArthur in France in the 42d ("Rainbow") Division. During World War II he commanded the 85th Infantry Division in Italy, fighting alongside Almond's 92d Division. In the postwar years he had been assistant commanding general of John Hodge's XXIV Corps in the Korean occupation and, until its deactivation in March 1950, commander of Eighth Army's I Corps in Japan.[9-78]

When the NKPA 5th and 12th divisions began the attack on Pohang, the ROK 3d and Capital divisions gave way and then suddenly collapsed. Owing to Coulter's extended occupation experience in Korea, Walker placed him in command of the ROK front and issued the ROKs a stern order to "stand in place and fight." With only his chief of staff, Andrew C. Tychsen, fifty-seven, in tow, Coulter hurriedly established an advanced CP at Kyŏngju, behind the crumbling ROK front at Pohang. Tychsen, who had served Coulter as G3 during the Korean occupation, was named the "hatchet man," authorized by Coulter to use "whatever force" he needed to restore order in the panicky ROK high command. Knowing the ROKs well, Tychsen did not particularly relish the chore. "There we were, only General Coulter and myself, mind you," he remembered.[9-79]